Sucker rod



May 19,1925; 1,538,093

' D.R.DALE

x SUCKER ROD Filed Max 9 3 .1, ENTER f PQ Patented May 19, 1925.

UNITED STATES 1,538,093 PATENT OFFICEQ' DUDLEY R. DALE, 0F TOLEDO, OHIO,ASSIGNOR TO THE S. M. JONES COMPANT', OF TOLEDO, OHIO, A CORPORATION OFOHIO.

SUCKER ROD.

Application filed May 28,

To all whom it may concern:

Be it known that I, DUDLEY R. DALE, a citizen of the United States, anda resident of Toledo, in the county of Lucas and State of Ohio, havemade an Invention Appertaining to a Sucker Rod, which invention is fullyset forth in the following specification.

My invention has for its object to provide a means for protectingrelatively reciprocating metal parts from wear caused by'thereciprocatory movements. The invention is of special advantage whenembodied in a construction wherein there is considerable loose lateralplay between the reciprocatory parts. The invention particularly has forits object to provide a means for protecting the metal tubing of oilwells from thewearing action of the reciprocating sucker rod. The suckerrods are formed of joined sections having connecting parts of largerdiameter than the body of the sucker rod for joining the sections of thesucker rod together. In oil wells of considerable depth the Variation ofthe strata through which the well extends causes considerable deviationfrom the vertical, with the result that when the sucker rod is placed inposit-ion and reciprocated to pump the oil from the well the parts ofthe sucker rod are pressed with considerable pressure against the tubingthat forms the wall of the well. Continual reciprocation of the suckerrod causes wear and'in a very'short time causes leakage and loss. Avariety of protective devices have been suggested in the art, but I havefound that by forming the connecting parts of a softer metal than thatof which the tubing is formed, the wear and tear is quite completelyeliminated. The metal of the connectors being different from that ofwhich the tubing is formed, the friction between the parts is greatlyreduced. The connecting parts, moreover, are considerably larger thanthe body of the sucker rod so that the bearing points as between thereciprocating sucker rod and the tubing will be on the connectors,notwithstanding the deformation of the oil well produced in the drillingof the well.

Furthermore, as the connectors wear they may be readily renewed orreplaced and thus save the expense of new forgings forming the ends ofthe sections of the sucker rods. Also connectors of different sizes maybe used for connecting sucker rods of the same 1923. Serial No. 641,862.

as a rule a certain relative size to thediam eter of the tubing. By myinvention, the same sized rod may be used with connectors of varyingsizes and thus may be used in tubing of different diameters. The size ofthe connector used will be such as to maintain the proper relationbetween the size of the connector to the diameter of the tubing.Anjembodiment of the invention is. illustrated in th accompanyingdrawings wherein is shown an oil' well sucker rod that is described indetail, hereinafter.

Referring to-the drawings, Fig. 1 illustrates a side view of one form ofconnector located at the joints of the sections of the sucker rod. Fig.2 illustrates a broken View of one ofthe sections. Fig. 3 illustrates amodified form of connector. Fig. 4 illustrates a broken View of thesucker rod havingthe connecting means shown in Fig. 3. Fig. 5illustrates a side view of the connector shown in section in Fig. 3.

I11 Figs. 1 and 2, 1 indicates sections of a sucker rod. The ends of thesucker rod have threaded portions 4 which are known as pins. Arelatively long sleeve issecured to the lower end of eachsection of asucker rod. Enlarged portions or'shou'lders 5 are located at the basesofthe threaded pins 4. The sleeves 2 are provided with thinor featherededges 6. The sleeves 2 are thre aded onto the lower endsi until the'edgeportions 6 extend over'the shoulders5 and the sleeves abut against theshoulders 5. The thin edges 6 of the sleeves 2 are then bent or crimpeddown over the shoulders 5 so as to the lower ends of the'sucker rod ispre" vented notwithstanding the continual reciprocatory movement of thesucker rod in the operation of the pump. If desired, the flanges 6,after they have been bent down over the shoulders 5, may be spot-weldedand thus further secured.

The upper end of each section of the I sucker rod is provided with arelatively short sleeve or collar 8 through which the upper pin 4 ofeach joint of the sucker rod protrudes. The sleeve 8 is also providedwith a thin edge portion 6 of a form like unto that of the sleeve 2,while the upper end of each section of the sucker rod is also providedwith a shoulder 5 over which the thin edge portion 6 of the sleeve 8 isbent and secured in the same manner that the thin edgeportion of thesleeve '2 is secured to the sucker rod.

The sections of the sucker rod are joined together by tightly screwingthe sleeve 2 of each consecutive section of the sucker rod onto the pin4 of each preceding section of the sucker rod as the sections thusunited are lowered into the tubing of the well. The sleeves 2 and thecollars 8 have the same diameter, and moreover, the ends slope towardthe aXis of the sucker rod. Consequently a smooth cylindrical surfacehaving a diameter considerably larger than any of the other parts ofthe'sucker'rods is presented to the surface of the tubing, with theresult that bearing or rubbing points of the sucker rod and thevibration and pounding that is caused by the reciprocatory movements ofthe sucker rods is sustained on the sleeves that surround the ends ofthe sections of the sucker rod. The sleeves 2 and 8 formsoft steel boxesthat take the wear and thus prevent the wear of the reciprocatory andvibratory movements on the tubing.

The boxes are formed of low carbon steel 'bent over the shoulders 5. Asleeve coupler 9 is threaded onto the lower pin of each section of thesucker rod until it abuts with the sleeve 8 located on that end of thesucker rod. The connector 9 is threaded onto the upper pin 4 of theuppermost section of the sucker rod in the top of the well as the suckerrod is being formed and lowered, section by section, until it abuts thesleeve 8 located on the upper end of that section. The connector 9 isprovided with flattened portions located on opposite sides, as at 10,whereby a wrench grip may be readily ob t ained and a secure coupling asbetween the sections of the sucker rod may be produced. This form ortype of sucker rod will also protect the casing since the sleeves 8 andthe couplings 9 located at the joints of the sections have a diameterlarger than any other part of the sucker rod and are formed 'of soft lowcarbon steel, and consequently of a metal different from that of whichthe tubing is formed.

I claim:

1. In an oil well jointed sucker rod, each section of the sucker rodhaving threaded pins, and enlarged portions forming shoulders, sleevessurrounding the base of the pins and having feathered edges crimped downover the shoulders to prevent rotation of the sleeves relative to thepins, means for connecting the sections together, the said sleeveshaving a diameter greater than the other parts of the sucker rod andforming bearing parts for the sucker rod.

2. In an oil well jointed sucker rod, each section of the sucker rodhaving threaded pins, and enlarged portions forming shoulders, sleevessurrounding the base of the pins and having feathered edges crimped downover the shoulders and spot-welded thereto to prevent rotation of thesleeves relative to the pins, means for connecting the sectionstogether, the said sleeves having a diameter greater than the otherparts of the sucker rod and forming bearing parts for the sucker rod.

In testimony whereof, I have hereunto signed my name to thisspecification.

DUDLEY R. DALE.

